Merge pull request #213 from fluxcd/dependabot/docker/docker-00e494591e

Bump alpine from 3.20 to 3.21 in the docker group

Author: stefanprodan

Dockerfile

@@ -27,7 +27,7 @@ COPY controllers/ controllers/
 ENV CGO_ENABLED=0
 RUN xx-go build -a -o source-watcher main.go
 
-FROM alpine:3.20
+FROM alpine:3.21
 
 RUN apk add --no-cache ca-certificates tini